Re: join utility segfults

[Ondřej Vašík]

Ondřej Vašík wrote: 
> Pádraig Brady wrote:
> > Roman Kirillov wrote:
> > > address@hidden py-src]$ join s1.txt s2.txt
> > > Segmentation fault
> > > files: http://sigizmund.info/upload/s12.tgz (28 mb)
> > 
> > This issue seems related to the i18n patch applied by your distro
> Just would like to add that it's already fixed in Fedora rawhide
> package, so I'll fix it in next Fedora coreutils update for F-9/F-10.
> In F-8 not, it's already EOL.

To keep the list informed about the conclusion...
It turned out that it was not really fixed in rawhide at the time of my
reply. Just due to "better memory management" change in join.c done by
Bo Borgerson between 6.12 and 7.0 was the occurance chance of the
segfault reduced from 100% to ~10%. After investigation of the problem
the culprit is now known. Multibyte patch was checking for exact
equality/non-equality with the limit of the file, so the limit was
skipped(and therefore SIGSEGV occured). Problem was fixed and built in
koji (Rawhide branch) as
http://koji.fedoraproject.org/koji/buildinfo?buildID=99330 and reported
against RHEL-5 as https://bugzilla.redhat.com/show_bug.cgi?id=497368 .
Patch to fix the issue could be found in that bugzilla, should work for
affected Fedora's and RHEL (or derived Distros). Additionally the issue
could be easily workarounded by using singlebyte locales (e.g. LC_ALL=C
join).

Greetings,
         Ondřej Vašík

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